GB1206234A - Process for the production of porous articles from finely particled polyethylene and articles obtained according to this process - Google Patents

Process for the production of porous articles from finely particled polyethylene and articles obtained according to this process

Info

Publication number
GB1206234A
GB1206234A GB363768A GB363768A GB1206234A GB 1206234 A GB1206234 A GB 1206234A GB 363768 A GB363768 A GB 363768A GB 363768 A GB363768 A GB 363768A GB 1206234 A GB1206234 A GB 1206234A
Authority
GB
United Kingdom
Prior art keywords
polyethylene
water
porous
soluble material
articles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB363768A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PLAST LABOR SA
Original Assignee
PLAST LABOR SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PLAST LABOR SA filed Critical PLAST LABOR SA
Publication of GB1206234A publication Critical patent/GB1206234A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/202—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising elimination of a solid or a liquid ingredient
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/24—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by surface fusion and bonding of particles to form voids, e.g. sintering
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/16—Halogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/044—Elimination of an inorganic solid phase
    • C08J2201/0444—Salts
    • C08J2201/0446—Elimination of NaCl only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Abstract

1,206,234. Porous aricles of polyethylene. PLAST-LABOR S.A. 24 Jan., 1968 [25 Jan., 1967], No. 3637/68. Headings C3C and C3P. Porous articles are produced by mixing particulate polyethylene with a water-soluble material which does not attack the polyethylene, melts above the sintering temperature of the polyethylene and has the same particle size as the polyethylene, sintering and dissolving out the water-soluble material. The polyethylene preferably has a particle size of less than 800 microns and may be used in from 20 to 30% by weight of the mixture. The water-soluble material may be sodium chloride. The sintering is preferably effecting by heating the mixture in a mould having thin walls to a temperature above the melting point of polyethylene. The mixture may be placed in a mould having a porous bottom through which hot air is caused to pass. The sintered material may then be soaked in water to remove the water soluble material, and dried. In the examples, finely divided polyethylene is mixed with common salt, sintered and the salt dissolved out of the mass with water.
GB363768A 1967-01-25 1968-01-24 Process for the production of porous articles from finely particled polyethylene and articles obtained according to this process Expired GB1206234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH107667A CH476776A (en) 1967-01-25 1967-01-25 Process for the production of porous bodies from finely divided polyethylene

Publications (1)

Publication Number Publication Date
GB1206234A true GB1206234A (en) 1970-09-23

Family

ID=4201883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB363768A Expired GB1206234A (en) 1967-01-25 1968-01-24 Process for the production of porous articles from finely particled polyethylene and articles obtained according to this process

Country Status (3)

Country Link
CH (1) CH476776A (en)
DE (1) DE1704939A1 (en)
GB (1) GB1206234A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5977229A (en) * 1995-10-02 1999-11-02 Hoechst Aktiengesellschaft Hydrophilically modified polyethylene resins
EP1948722A2 (en) * 2005-11-04 2008-07-30 PPD Meditech Porous material and method for fabricating same
CN116162279A (en) * 2023-02-16 2023-05-26 罗摩材料(深圳)有限公司 Porous polyolefin and preparation method and application thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2621195C2 (en) * 1976-05-13 1982-10-14 Giulini Chemie Gmbh, 6700 Ludwigshafen Stiffening materials for shoes and parts of shoes
DE3546151A1 (en) * 1985-12-27 1987-07-30 Dynamit Nobel Ag METHOD FOR PRODUCING COLORED DESSINATED HOMOGENEOUS SURFACES BASED ON THERMOPLASTIC PLASTICS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5977229A (en) * 1995-10-02 1999-11-02 Hoechst Aktiengesellschaft Hydrophilically modified polyethylene resins
EP1948722A2 (en) * 2005-11-04 2008-07-30 PPD Meditech Porous material and method for fabricating same
EP1948722A4 (en) * 2005-11-04 2010-06-30 Ppd Meditech Porous material and method for fabricating same
US8383024B2 (en) 2005-11-04 2013-02-26 Ppd Meditech Porous material and method for fabricating same
CN116162279A (en) * 2023-02-16 2023-05-26 罗摩材料(深圳)有限公司 Porous polyolefin and preparation method and application thereof

Also Published As

Publication number Publication date
CH476776A (en) 1969-08-15
DE1704939A1 (en) 1971-06-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee